---
product_id: 589121497
title: "NEIKO 30252A Water and Oil Separator for Air Line | 1/4\" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance"
brand: "neiko"
price: "฿5153"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/589121497-neiko-30252a-water-and-oil-separator-for-air-line-1
store_origin: TH
region: Thailand
---

# 90 PSI moisture & water trap 1/4" NPT universal fit Aluminum & brass rugged build NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance

**Brand:** neiko
**Price:** ฿5153
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your air tools flawless — because every drop counts!

## Quick Answers

- **What is this?** NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance by neiko
- **How much does it cost?** ฿5153 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/589121497-neiko-30252a-water-and-oil-separator-for-air-line-1)

## Best For

- neiko enthusiasts

## Why This Product

- Trusted neiko brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Quick-Release Valve:** Effortless drainage keeps your system clean without downtime
- • **Ultimate Air Purity:** Eliminates water, oil, and debris for peak tool performance
- • **Durable Construction:** Rugged aluminum housing with brass fittings built to last
- • **Clear Monitoring Window:** Easily track trapped moisture and contaminants in real-time
- • **Universal Compatibility:** Fits any standard 1/4" NPT air hose and tools seamlessly

## Overview

The NEIKO 30252A Water and Oil Separator is a 1/4" NPT inline accessory designed to protect and optimize pneumatic tools by filtering out water, oil, and particles at up to 90 PSI. Featuring a durable aluminum and brass build, a clear monitoring window, and a quick-release valve, it ensures longer tool lifespan and consistent performance across garages, paint shops, and mechanic bays.

## Description

The Neiko 30252A Water and Oil Separator features a universal 1/4-inch NPT inlet and outlet and is made to be compatible for any compressor, air hose, air tools and spray guns. The separator has a maximum air pressure of 90 psi and serves as the gate keeper between your compressor and air tools. By filtering the water and oil and trapping it inside of the self-contained unit, the 30252A will ensure longevity in your tool collection and help you maintain air tools that perform at an optimal level every time. A must-have for tool enthusiasts, this inexpensive air tool accessory can save you hundreds and even thousands of dollars in replacement tools. Whether at your home garage, paint shop or mechanics shop this air filter dryer attached to your air compressor and is designed to remove all the liquid water, vapor, solid particles, trash, debris, oil, and oil vapor from the machine. As it removes all sorts of contaminants from the compressed air in air hoses. Inline water trap cleans and dries the air that gets delivered to your air tool instead of unfiltered air.

## Features

- WATER SEPARATOR: Add this air-tool accessory to your shop or garage to stop moisture, water, oil, and particles from entering air-spray guns and air-compressor tools. You can also add it to your compressor hose to keep the equipment working efficiently.
- OIL SEPARATOR: This spray-gun unit separates the oil from the air as it goes through your air hose. The oil stays inside the compressor to keep it lubricated while the compressed air stays free of oil, ensuring maximum air output to your air tools.
- OPTIMIZE PERFORMANCE: Available in 90 PSI or 150 PSI versions, this oil-water separator traps water vapor and dust to maximize performance for cleaner and more even jobs, saving you countless dollars in replacing expensive air tools.
- EASY TO SEE: This air-compressor in-line dryer has a clear build that allows you to easily monitor buildup and the amount of trapped water and dust particles. It also has a convenient quick-release valve to remove anything trapped inside.
- SPECIFICATIONS: The air-compressor moisture filter comes with a 1/4-inch NPT inlet and outlet and will fit any standard air hose with a 1/4-inch fitting. The durable aluminum housing with brass fittings will withstand rugged everyday use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002GQ3SUA |
| Best Sellers Rank | #379,886 in Home Improvement ( See Top 100 in Home Improvement ) #1,211 in Air Compressor Accessories |
| Brand | Neiko |
| Colour | Reddish |
| Country of Origin | USA |
| Global Trade Identification Number | 00837013302520 |
| Item Dimensions LxWxH | 17.3 x 13 x 5.1 Centimeters |
| Item Weight | 99.8 g |
| Item dimensions L x W x H | 17.3 x 13 x 5.1 Centimeters |
| Item model number | 30252A |
| Manufacturer | Ridgerock Tools Inc. |
| Net Quantity | 1.0 Count |
| Power Source | Compressed Air |
| Product Dimensions | 17.27 x 12.95 x 5.08 cm; 99.79 g |
| Special Feature | Automatic Shut Off |
| Style | Oil/Water Separator - 90psi |
| UPC | 837013302520 |
| Voltage | 100 Volts |

## Product Details

- **Brand:** Neiko
- **Colour:** Reddish
- **Power Source:** Compressed Air
- **Special Feature:** Automatic Shut Off
- **Voltage:** 100 Volts

## Images

![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance - Image 1](https://m.media-amazon.com/images/I/71+Il6eMhML.jpg)
![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance - Image 2](https://m.media-amazon.com/images/I/710FQnk0esL.jpg)
![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance - Image 3](https://m.media-amazon.com/images/I/71PEiv88GcL.jpg)
![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance - Image 4](https://m.media-amazon.com/images/I/71haqKsYQ-L.jpg)
![NEIKO 30252A Water and Oil Separator for Air Line | 1/4" NPT Inlet and Outlet | 90 PSI | Air Compressor and Air Tool Accessory | Protect Lifespan of Pneumatic Tools | Optimize Performance - Image 5](https://m.media-amazon.com/images/I/71B2wU911cL.jpg)

## Questions & Answers

**Q: OK just got this thing, no markings for flow directions and two conflicting answers for inlet and outlet.  which is correct?**
A: I see where the confusion is.  The fittings seem to be on backwards.  At least for my rig.  Not to mention it's backwards in one of the promo pix.  Way to go Neiko!  Here's how I'm fixing mine.  
Female quick disconnect is fixed on my compressor,
male quick disconnect ----->  1/4" FNPT ($6 for two)
filter (the shiny drain valve should point back to the compressor, not the tool)
*** Ideally the last piece would be a 1/4" FNPT to 1/8" BSPT (but I can't find one)
1/4" MNPT to 1/4" MNPT ($7.80 for four)
1/4" FNPT to 1/8" BSPT (running an airbrush, so I have to reduce down to this quirky size)

**Q: I have a supply air line hanging from the ceiling and I connect to the bottom of it. Which way would the filter be hanging for best performance?**
A: yes the valve should be at the bottom ! These filters appear to work both ways @! i have several and there don't appear to be any restriction on air flow either way i hook it up ! It should be fine both ways ! Might want to try it and see if it affects air flow for you ?I really don't care for it in the line and rather use it mounted on my paint gun ! I use the throw away ones for painting and this style for air tools with them mounted to the tool itself !

**Q: Can I put this after the regulator or will that drop pressure too much?**
A: I recommend the bottom of you gun if possible. It is made to allow free flow. The pressure may drop a fraction of a pound. Not enough for anything... it pretty much just filters the moisture so you don't have water spots out your gun as you spray. I used it in line for an airbrush but would recommend an iwata if you are using it for that application

**Q: Why are the reviews and questions for this model  (30253A) the same as for model 30252A?  There is clearly an error.**
A: Check the manufacturer's specifications.  It might be small dimension changes that do not affect the ability of the unit, i.e. length, diameter, etc.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-13*